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• TUESDAY is the last day to turn in any absent or late work (no late exceptions since the quarter ends soon!) • THURSDAY: All 3rd Quarter Warm Ups are due. They are on my website! If you have been absent you must make up the warm ups. 7th grade = 24 • Warms Ups are worth 50 points! This can bring up your B+ to an A-, or can bring down your A to a B. • FRIDAY: For extra credit turn in your hall pass. Put your name on it before you turn it in (green). CLASS REMINDERS • Today in class you will get your current grade. • If you are missing an assignment you will get a slip showing what you are missing. • ab= ABSENT mi= MISSING • If your assignment says “ab” and it has been over a week since the date, it is LATE and you need a late slip and a Parent signature to get credit. • Remember if you are absent 1 day you actually have 2 days of assignments to turn in. • I only allow 3 late assignments a quarter. • Get your make up work in to bring up your grade. • If you are missing an assignment look in your binder first to see if maybe you forgot to turn it in. • If you have a question about your grade ask me at the end of the period. Find the missing angles! Hint: Start at #1 #1 #2 60° ANSWERS Hint: A triangle #4 #3 87° #1 totals 180° #5 #6 #2 #3 #4 #7 #8 50° 135° 20° #5 #6 #7 #9 #10 #8 70° #11 #9 #10 Hint: A quadrilateral 60° #12 #11 totals 360° #12 During the Warm Up you should have gotten a half sheet. 7th grade green Put your name and period on this sheet. This half sheet along with ALL OF YOUR WARM UPS are due by Wednesday. Warms Ups are worth 50 points! This can bring up your B+ to an A-, or can bring down your grade from an A to a B. If you are missing warm ups get them from my website: MATH WARM UPS, 3rd Quarter 7th Grade •There is lots of vocabulary in chapter 8! •So you have 3 Study Guides today! • Watch the slide show & pay attention! TYPES OF ANGLES ACUTE ANGLE Measures less than 90° RIGHT ANGLE Measures exactly 90° OBTUSE ANGLE Measures greater than 90° and less than 180° STRAIGHT ANGLE Measures exactly 180° ADJACENT ANGLES Two angles that share a common vertex and a common side. R S common <RTS and <STU are adjacent side angles T U vertex COMPLEMENTARY ANGLES 2 angles whose sum is 90 . Examples 50 50 40 90 40 Adjacent 30 30 60 90 60 Not adjacent SUPPLEMENTARY ANGLES 2 angles whose sum is 180 . Examples 130 Adjacent 50 130 50 180 110 70 180 110 70 Not Adjacent SUPPLEMENTARY ANGLES Find The Angle’s Supplement! e a b d c 42 ma 138 mc 138 supplementary to 42 supplementary to 42 VERTICAL LINES HORIZONTAL LINES PARALLEL LINES Parallel lines are in a plane. They are the same distance apart and they never intersect. • • A B • • C D AB CD means parallel PARALLEL LINES Parallel lines are in a plane. They are the same distance apart and they never intersect. PERPENDICULAR Lines that intersect to form right angles. 90° 90° 90° 90° Use the figure to find the following: A B E F D C H G Two pairs of Parallel Lines Two pairs of Perpendicular Lines AB DC AB BC or AD GC HD EH GH or EF SKEW LINES Lines that lie in different planes. They are neither parallel nor intersecting. SKEW LINES Lines that lie in different planes. They are neither parallel nor intersecting. G B F A H D H C CD and FA are SKEW LINES FA and BD are SKEW LINES Collinear Non-Collinear When a set of points When a set of points can could be on the same line. not be on the same line. Any two points will always be collinear. It takes at least three points to be non-collinear. Coplanar Non-Coplanar Q P P When a set of points When a set of points can could be in the same plane. not be in the same plane. Any three points will always be coplanar. It takes at least four points to be non-coplanar. Parallel Lines Perpendicular Lines Lines in the same plane Lines that meet at 90 . that do not intersect. X B A M N D Y C AB CD XY MN Skew Lines Lines in different planes that do not intersect and are not parallel. Use the figure to find the following: A B E F D C H G Two pairs of Two pairs of Two pairs of Parallel Lines Parallel Planes Skew Lines AB CD Plane AED Plane BCF AD, BF GC HD Plane EFG Plane ABC EH, CG Can You Name The Angles? Name the obtuse angles? 1 2 1, 4, 3 4 5, 8 5 6 7 8 Can You Name The Angles? Name the complementary angles? 1 2 Not possible, 3 4 no 2 angles 6 total 90º 5 7 8 Can You Name The Lines? Name the Parallel Lines? A 1 2 B 3 4 AB CD C 5 6 D 7 8 Can You Name The Angles? Name the acute angles? 1 2 2, 3, 3 4 6, 7 5 6 7 8 Can You Name The Angles? Name the supplementary angles? 1&2 2&4 1 2 3&4 6&8 3 4 5 6 5&6 1&3 7 8 7&8 5&7 Can You Name The Angles? Name the right angles? 1 2 Not possible, 3 4 no angle is 6 exactly 90º 5 7 8 Can You Name The Lines? Name the Perpendicular Lines? A 1 2 B Not possible, 3 4 no lines C 5 6 D intersect at 90º 7 8 The End Take out your study guide #9 Parallel Lines Parallel lines are in a plane. They are the same distance apart and they never intersect. • • A B • • C D AB CD means parallel # 10 PERPENDICULAR LINES Perpendicular lines are lines that intersect to form right angles. Find x 90° 3x ? 3x = 90 degrees x = 30 degrees 90° 90° # 11 SKEW LINES Lines that lie in different planes. They are neither parallel nor intersecting. G B F A H D H C CD and FA are SKEW LINES FA and BD are SKEW LINES Name___________ March 1, 2010 Period___ Pg. 386-387 #1-33 All Show all your work for full credit! HAPPY MARCH!

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posted: | 11/5/2012 |

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